Seized AC compressor

[Quatervois]

I have a 1991 Land Cruiser. Towards the end of last summer, my A/C compressor seized, and threw the belt.

Prior to this, the A/C was working very well for the three prior years that I've owned the vehicle.

I'd like to get the A/C working again. Is there anything I need to do, other than replace the compressor in order to get it working again?

I bought the vehicle from the second owner, and don't know if the A/C was converted from R12 to R134A. Is it feasable that a 34 year old Land Cruiser would still be running R12 and still be nice and cold?

It's a low-mileage vehicle, but somehow I find it hard to believe that the A/C would have still been cold running the R12.

How can I tell if a convertion has already been done or not?

Thank you in advance.

 

[mudgudgeon]

Is there an R134a sticker on the rad support panel?

Post pics of the schrader valve caps on the AC compressor.

They will usually be different size for r12 vs r134a

 

[Desert Dino]

I have a 1991 Land Cruiser. Towards the end of last summer, my A/C compressor seized, and threw the belt.

Prior to this, the A/C was working very well for the three prior years that I've owned the vehicle.

I'd like to get the A/C working again. Is there anything I need to do, other than replace the compressor in order to get it working again?

I bought the vehicle from the second owner, and don't know if the A/C was converted from R12 to R134A. Is it feasable that a 34 year old Land Cruiser would still be running R12 and still be nice and cold?

It's a low-mileage vehicle, but somehow I find it hard to believe that the A/C would have still been cold running the R12.

How can I tell if a convertion has already been done or not?

Thank you in advance.

I replaced the compresor and did the work as per FSM including the oil and gas load


work like a charm

https://www.amazon.com/gp/product/B001UC9IM8/?tag=ihco-20

 

[ppc]

At minimum the AC dryer and expansion valve should be replaced.

 

[Marvelicious]

At minimum the AC dryer and expansion valve should be replaced.

I've heard mention elsewhere of using inline filters on the inlet and outlet of a new compressor as a way to protect the new compressor from any debris that was left behind, and also to protect the other components from the next failure. I don't have any personal experience, but it sounds reasonable. Anyone familiar with this?

 

[Quatervois]

Is there an R134a sticker on the rad support panel?

Post pics of the schrader valve caps on the AC compressor.

They will usually be different size for r12 vs r134a

I just posted pics of the schrader valve caps, as well as the r12 sticker. The system obviously has never been converted to r134a.

 

[spfrancis]

Hey, so I was curious if the OP ended up fixing this issue. I have a similar issue with my compressor freezing and throwing the belt on my 91 cruiser. I stopped using the AC about 6 years ago, and would like to make this a daily driver, so I need to have the AC working. From what I read, I'm thinking I could possibly do a DIY with the clutch, as it was making a lot of noise before it started to shred the belts. So I"m assuming tht the clutch is the problem. I've had the R134a conversion, but need to figure out the best way to address this. I see on RockAuto that they are selling a NippoDenso Compressor and clutch for the 3FE motor for only $157....am I better off getting that, and possibly just using the clutch on that with my existing compressor...so that I don't have to deal with emptying the AC etc.